diff --git a/asyncstdlib/__init__.py b/asyncstdlib/__init__.py
index 27118f9..b9b4e9b 100644
--- a/asyncstdlib/__init__.py
+++ b/asyncstdlib/__init__.py
@@ -45,7 +45,7 @@
 from .asynctools import borrow, scoped_iter, await_each, any_iter, apply, sync
 from .heapq import merge, nlargest, nsmallest
 
-__version__ = "3.12.3"
+__version__ = "3.12.4"
 
 __all__ = [
     "anext",
diff --git a/pyproject.toml b/pyproject.toml
index be090c4..c47e790 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
 license = {"file" = "LICENSE"}
 keywords = ["async", "enumerate", "itertools", "builtins", "functools", "contextlib"]